/******************************************************************************

          Copyright (C), 2001-2015, HiSilicon Technologies Co., Ltd.
 ******************************************************************************
 File Name       : com_parse.c
 Version         : Initial draft
 Author          : Device Chipset STB Development Dept
 Created Date    : 2015-07-29
 Last Modified by: sdk
 Description     :
 Function List   :
 Change History  :
 Version  Date        Author     DefectNum         Description
 main\1   2015-07-29  sdk  N/A               Create this file.
 ******************************************************************************/

/******************************************************************************/
/*  Header file references                                                    */
/*  Quote order                                                               */
/*  1. Global header file                                                     */
/*  2. Public header files of other modules                                   */
/*  3. Header files within this module                                        */
/*  4. Private files within this module (.inc)                                */
/******************************************************************************/

#include "com_debug.h"
#include "com_parse.h"

#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */

/*************************** Macro Definition *********************************/

/*************************** Structure Definition *****************************/

/*************************** API Declaration **********************************/
static const unsigned int aCrc32_tab[] =
{
    0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L, 0x130476dcL, 0x17c56b6bL,
    0x1a864db2L, 0x1e475005L, 0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
    0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL, 0x4c11db70L, 0x48d0c6c7L,
    0x4593e01eL, 0x4152fda9L, 0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
    0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L, 0x791d4014L, 0x7ddc5da3L,
    0x709f7b7aL, 0x745e66cdL, 0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
    0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L, 0xbe2b5b58L, 0xbaea46efL,
    0xb7a96036L, 0xb3687d81L, 0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
    0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L, 0xc7361b4cL, 0xc3f706fbL,
    0xceb42022L, 0xca753d95L, 0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
    0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL, 0x34867077L, 0x30476dc0L,
    0x3d044b19L, 0x39c556aeL, 0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
    0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L, 0x018aeb13L, 0x054bf6a4L,
    0x0808d07dL, 0x0cc9cdcaL, 0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
    0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L, 0x5e9f46bfL, 0x5a5e5b08L,
    0x571d7dd1L, 0x53dc6066L, 0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
    0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL, 0xbfa1b04bL, 0xbb60adfcL,
    0xb6238b25L, 0xb2e29692L, 0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
    0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL, 0xe0b41de7L, 0xe4750050L,
    0xe9362689L, 0xedf73b3eL, 0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
    0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L, 0xd5b88683L, 0xd1799b34L,
    0xdc3abdedL, 0xd8fba05aL, 0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
    0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL, 0x4f040d56L, 0x4bc510e1L,
    0x46863638L, 0x42472b8fL, 0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
    0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L, 0x36194d42L, 0x32d850f5L,
    0x3f9b762cL, 0x3b5a6b9bL, 0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
    0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L, 0xf12f560eL, 0xf5ee4bb9L,
    0xf8ad6d60L, 0xfc6c70d7L, 0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
    0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL, 0xc423cd6aL, 0xc0e2d0ddL,
    0xcda1f604L, 0xc960ebb3L, 0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
    0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL, 0x9b3660c6L, 0x9ff77d71L,
    0x92b45ba8L, 0x9675461fL, 0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
    0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L, 0x4e8ee645L, 0x4a4ffbf2L,
    0x470cdd2bL, 0x43cdc09cL, 0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
    0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L, 0x119b4be9L, 0x155a565eL,
    0x18197087L, 0x1cd86d30L, 0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
    0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L, 0x2497d08dL, 0x2056cd3aL,
    0x2d15ebe3L, 0x29d4f654L, 0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
    0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL, 0xe3a1cbc1L, 0xe760d676L,
    0xea23f0afL, 0xeee2ed18L, 0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
    0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L, 0x9abc8bd5L, 0x9e7d9662L,
    0x933eb0bbL, 0x97ffad0cL, 0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
    0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
};

#define DO1(u32Crc, buf) u32Crc = (u32Crc << 8) ^ aCrc32_tab[((u32Crc >> 24) ^ *(buf)++) & 0xff];
#define DO2(u32Crc, buf) DO1(u32Crc, buf) DO1(u32Crc, buf)
#define DO4(u32Crc, buf) DO2(u32Crc, buf) DO2(u32Crc, buf)
#define DO8(u32Crc, buf) DO4(u32Crc, buf) DO4(u32Crc, buf)

HI_U32 COM_CRC32(HI_U32 u32Crc, const HI_U8* pu8Data, HI_U32 u32Len)
{
    HI_U8* pu8Temp = (HI_U8*) pu8Data;

    if (HI_NULL_PTR == pu8Data)
    {
        COM_PrintErrCode(COM_ERR_PARAM);
        return 0;
    }

    while (8 <= u32Len)
    {
        DO8(u32Crc, pu8Temp);
        u32Len -= 8;
    }

    if (0 < u32Len)
    {
        do
        {
            DO1(u32Crc, pu8Temp);
        }
        while (--u32Len);
    }

    return u32Crc;
}

HI_S32 COM_ParseSection
(
    HI_U8*          pu8SectionData,
    HI_U32          u32SectionDataLen,
    COM_SECTION_S*  pstSection
)
{
    HI_U32 u32CRC32 = 0;
    HI_U32 u32TotalRead = 0;
    HI_U8* pu8ReadPos = HI_NULL_PTR;

    COM_DBG_FuncEnter();

    COM_CHECK_PARAM(HI_NULL_PTR == pu8SectionData);
    COM_CHECK_PARAM(HI_NULL_PTR == pstSection);
    COM_CHECK_PARAM(0 == u32SectionDataLen);

    pu8ReadPos = pu8SectionData;

    HI_READ_08BIT(pu8ReadPos, pstSection->u8TableID, u32TotalRead);
    HI_READ_12BIT(pu8ReadPos, pstSection->u16SectionLength, u32TotalRead);

    if (pstSection->u16SectionLength + u32TotalRead != u32SectionDataLen)
    {
        COM_PrintErrCode(COM_ERR_IMAGE_ILLEGAL);
        return COM_ERR_IMAGE_ILLEGAL;
    }

    HI_READ_16BIT(pu8ReadPos, pstSection->u16TableIDExtension, u32TotalRead);
    HI_READ_08BIT(pu8ReadPos, pstSection->u8SoftwareVersion,   u32TotalRead);
    HI_READ_08BIT(pu8ReadPos, pstSection->u8SectionNumber,     u32TotalRead);
    HI_READ_08BIT(pu8ReadPos, pstSection->u8LastSectionNumber, u32TotalRead);

    pstSection->u32PrivateDataLen = u32SectionDataLen - (u32TotalRead + 4);
    pstSection->pu8PrivateData    = pu8ReadPos;

    HI_SKIP_BYTES(pu8ReadPos, pstSection->u32PrivateDataLen, u32TotalRead);
    HI_READ_32BIT(pu8ReadPos, pstSection->u32CRC32, u32TotalRead);

    if (u32TotalRead != u32SectionDataLen)
    {
        COM_PrintErrCode(COM_ERR_IMAGE_ILLEGAL);
        return COM_ERR_IMAGE_ILLEGAL;
    }

    u32CRC32 = COM_CRC32(0xffffffffL, pu8SectionData, u32SectionDataLen - 4);
    if (pstSection->u32CRC32 != u32CRC32)
    {
        COM_PrintErrCode(COM_ERR_IMAGE_ILLEGAL);
        return COM_ERR_IMAGE_ILLEGAL;
    }

    COM_DBG_FuncExit();
    return HI_SUCCESS;
}


#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */

